NAME

rspserver —

RSerPool Server (PE) for multiple example services

SYNOPSIS

rspserver [-local=address:port,address,...] [-asapannounce=address:port] [-identifier=PE_identifier] [-policy=policy_specification] [-poolhandle=pool_handle] [-quiet] [-registrar=address:port] [-rereginterval=milliseconds] [-runtime=milliseconds] [-uptime=seconds] [-downtime=seconds] [-logcolor=on|off] [-logappend=filename] [-logfile=filename] [-loglevel=0-9] [-cspserver=address:port] [-cspinterval=milliseconds]

rspserver [-calcapp] [-capcapacity=calculations_per_second] [-capcleanshutdownprobability=probability] [-capcookiemaxcalculations=calculations] [-capcookiemaxtime=seconds] [-capkeepalivetransmissioninterval=milliseconds] [-capkeepalivetimeoutinterval=milliseconds] [-capmaxjobs=max_jobs] [-capobject=name] [-capscalar=scalae_file] [-capvector=vector_file]

rspserver [-chargen] [-chargenmaxthreads=threads]

rspserver [-daytime]

rspserver [-discard]

rspserver [-echo]

rspserver [-fractal] [-fgpcookiemaxpackets=messages] [-fgpcookiemaxtime=milliseconds] [-fgpfailureafter=messages] [-fgpmaxthreads=threads] [-fgptestmode] [-fgptransmittimeout=milliseconds]

rspserver [-pingpong] [-pppfailureafter=messages] [-pppmaxthreads=threads]

rspserver [-scripting] [-sskeyring=keyring] [-sstrustdb=trust_db] [-sscachedirectory=directory] [-sscachemaxentries=entries] [-sscachemaxsize=kibibytes] [-sskeepaliveinterval=milliseconds] [-sskeepalivetimeout=milliseconds] [-sskeeptempdirs] [-ssmaxthreads=threads] [-sstransmittimeout=milliseconds]

DESCRIPTION

rspserver is an example Reliable Server Pooling (RSerPool) pool element (PE) that provides multiple services. Upon startup, one service has to be selected by the command-line parameters. To start multiple services, run multiple instances. rspserver provides the following services:

CalcApp: Calculation application model for performance tests. See https://duepublico.uni-duisburg-essen.de/servlets/DerivateServlet/Derivate-16326/Dre2006_final.pdf for more information.
CharGen: Sending as much character data as possible.
Daytime: Sending back current time of day.
Discard: Discarding incoming data.
Echo: Echoing back incoming data.
Fractal: Fractal generator with cookie-based failover.
PingPong: Simple request-response example using cookies for failover.
Scripting: Remote execution of scripts with upload/download of input/output data. Could for example be used for distributing simulation runs. Take care of security when using this service!

ARGUMENTS

The following options are available:

Common Pool Element Parameters:

-local=address:port,address,...

Sets the local endpoint address(es).

-asapannounce=address:port|auto|off

Sets the multicast address and port the ASAP instance listens for ASAP Server Announces on.

-identifier=PE_identifier

Sets a fixed PE identifier. Handle with care!

-policy=policy_specification

Sets the pool policy and its parameters (default is Round Robin). Supported policy specifications:

RoundRobin (default policy)
WeightedRoundRobin:weight
Random
WeightedRandom:weight
LeastUsed
LeastUsedDegradation:increment
PriorityLeastUsed:increment
LeastUsedDPF:dpf_value
Priority:priority
...

-poolhandle=pool_handle

Sets the PH to a non-default value; otherwise, the default setting is the service-specific default.

-quiet

Do not print startup and shutdown messages.

-rereginterval=milliseconds

Sets the PE's re-registration interval.

-runtime=seconds

After the configured number of seconds, the service is shut down. Floating-point values (e.g. 30.125) are possible.

-uptime=seconds

After negative exponential randomized uptime, the PE service goes down for a configured downtime. After that, it comes up again. This option can be used for testing the failure handling procedures.

-downtime=seconds

After negative exponential randomized downtime, the PE service comes up again. This option can be used for testing the failure handling procedures.

Logging Parameters:

-logappend=filename: Write logging output to a file (default is stdout); output will be appended to given file.
-logcolor=on|off: Turns ANSI colorization of the logging output on or off.
-logfile=filename: Write logging output to a file (default is stdout); given file will be overwritten.
-loglevel=0-9: Sets the logging verbosity from 0 (none) to 9 (very verbose). It is recommended to use at least a value of 2 to see possibly important error messages and warnings.

ASAP Protocol Parameters:

-registrar=address:port: Adds a static PR entry into the Registrar Table. It is possible to add multiple entries.
-registrarannouncetimeout=milliseconds: Sets the timeout for ASAP announces via multicast.
-registrarconnecttimeout=milliseconds: Sets the timeout for ASAP connection establishment.
-registrarconnectmaxtrials=trials: Sets the maximum number of ASAP connection establishment trials.
-registrarrequesttimeout=milliseconds: Sets the timeout for ASAP requests.
-registrarresponsetimeout=milliseconds: Sets the timeout for waiting to receive ASAP responses.
-registrarrequestmaxtrials=trials: Sets the maximum number of ASAP request trials.

Component Status Protocol (CSP) Parameters:

-cspinterval=milliseconds: Sets the interval for the CSP status updates in milliseconds. By default, the content of the environment variable CSP_INTERVAL is used. If not defined, no CSP status reports will be sent.
-cspserver=address:port: Sets the address of a CSP monitor server. By default, the content of the environment variable CSP_SERVER is used. If not defined, no CSP status reports will be sent.

Service Parameters:

-calcapp

Starts the CalcApp service.

-capcapacity=calculations_per_second: Sets the service capacity in calculations per second.
-capcleanshutdownprobability=probability: Sets the probability for sending state cookies to all sessions before shutting down.
-capcookiemaxcalculations=calculations: Sets the cookie interval in calculations.
-capcookiemaxtime=seconds: Sets the cookie interval in seconds.
-capkeepalivetransmissioninterval=milliseconds: Sets the keep-alive transmission interval in milliseconds.
-capkeepalivetimeoutinterval=milliseconds: Sets the keep-alive timeout in milliseconds.
-capmaxjobs=max_jobs: Sets the an upper limit for the number of simultaneous CalcApp requests.
-capobject=name: Sets the object name for scalar hierarchy.
-capscalar=scalar_file: Sets the name of vector scalar file.
-capvector=vector_file: Sets the name of vector output file.

-chargen

Starts the CharGen service.

-chargenmaxthreads=threads: Sets an upper limit for the number of simultaneous CharGen sessions.

-daytime

Starts the Daytime service.

-discard

Starts the Discard service.

-echo

Starts the Echo service.

-fractal

Starts the Fractal Generator service.

-fgpcookiemaxpackets=messages: Send cookie after given number of Data messages
-fgpcookiemaxtime=milliseconds: Send cookie after given number of milliseconds.
-fgpfailureafter=messages: After the set number of data packets, the server will terminate the connection in order to test failovers.
-fgpmaxthreads=threads: Sets an upper limit for the number of simultaneous Fractal Generator sessions.
-fgptestmode: Generate simple test pattern instead of calculating a fractal graphics (useful to conserve CPU power when debugging).
-fgptransmittimeout=milliseconds: Sets transmit timeout in milliseconds.

-pingpong

Starts the PingPong service.

-pppfailureafter=messages: After the set number of messages, the server will terminate the connection in order to test failovers.
-pppmaxthreads=threads: Sets an upper limit for the number of simultaneous PingPong sessions.

-scripting

Starts the Scripting service.

-sskeyring=keyring: The location of a GnuPG keyring to check the work packages and environments against. If a keyring is specified, only files that pass the validation are accepted.
-sscachedirectory=directory: Sets the environment cache directory.
-sscachemaxentries=entries: Sets the maximum number of environment cache entries.
-sscachemaxsize=kibibytes: Sets the maximum size of the environment cache in kibibytes.
-sskeepaliveinterval=milliseconds: Sets the keep-alive interval in milliseconds.
-sskeepalivetimeout=milliseconds: Sets the keep-alive timeout in milliseconds.
-sskeeptempdirs: Turns on keeping all temporary files for debugging. Handle with care!
-ssmaxthreads=threads: Sets an upper limit for the number of simultaneous sessions.
-sstransmittimeout=milliseconds: Sets the transmission timeout in milliseconds.

ENVIRONMENT

rspserver uses the environment variables CSP_SERVER and CSP_INTERVAL to define a CSP server to send reports to in the specified interval.

DIAGNOSTICS